Kuwait had a 4 hour window when the rate changed and didnt RV for months after , the people knew enough to be aware of the change.
This was not a slip up, it was live from Sacramento Travelex...they got a mind blowing rate.
Then Monday it converted bak to old rate. So this VERIFIES that the VND will RV. He called both US bank AND travelex and they BOTH had the SAME RATE.... OMG...WOW